Machine for rabbeting and coating the shiplap edges of siding panels



wgJoHNsou Er AL 2,402,633 MACHINE FOR RABBETING ARD COATING THE SHIPLAP EDGES OF SIDING PANELS June 25, 1946.

File d Dec. 3, 1943 3 Sheets-Sheet l m u cum mm ON N :95! WWW/ 8 a my B June 25,1946. w, OHN N HA 2,402,e33

' MACHINE FOR RABBETING AND COATING THE SHIPLAP EDGES OF SIDING PANELS Filed Dec. :5, 1945 s Sheets-Sheet s A 7835 MAI/"11%? I z 15 12 es EH16 '3 mvemons' WJOHNSON 92 1E A .MHBRUNEAU BY min kfi.

ATTORNEY Patented June 25, 1946 MACHiNE FOB; RABBETING AND COATING THE SHIPLAP EDGES OF SIDING PANELS William Johnson, Ville St. Pierre, and Joseph \V. H." Bruneau, Montreal; Quebec, Canada, assignors'to Building Products Limited, Montreal,

Quebec, Canada Application December 3, 1943, Serial No. 512,820 In Canada September 30, 1943 2 Claims; 1

This invention relates to the manufacture of siding and other panclsprovided with rabbeted edges and the object is to provide an improved machine whereby the rabbeting of such panels and the application of asphalt or other coating materials to the rabbeted edges is accomplished in one continuous operation,

According to this invention, a plurality of panels are-successively conveyed past a series of stations-including (1) oppositely located cutting stations'where'end portions of the panels are cut off to'reduce the panels to the proper length; (2) oppositely located rabbeting stations Where the said end portions of the panels are'grooved to provide rabbets'extending the full'width of the panels; and (3) oppositely located coating stationswhere a coating of asphalt'is applied to the defining walls of the rabbets. Suitable scrapers are arranged" adjacent the coating stations to smooth and level off the-applied coatings.

Proceeding-now tea more detailed description of this invention reference will he had to the accompanying drawings, wherein Fig. 1 is a plan view of our improved machine.

Fig] 2 is a longitudinal sectional view" taken substantially along the line 2-2 of Fig. l.

Fig. 3 is a longitudinal sectional view taken substantially alongthe line 3-3 of Fig 1.

Fig. 4 is a transverse sectional viewofa panel showing the manner'in whichthe edges of the panelare rabbeted' by the machine shown in the preceding figures;

Fig. 5 is an enlarged plan viewof one of the adjustable motor supports embodied'in said machine.

Fig; 6 is a side elevation of-the assembly shown inFig: 5;

Fig. 7' is an enlarged plan view showing the elementslocated atone of the coating stations forming part of'said machine.

Fig. 8 is a sideelevational view of the assembly shown in Fig. 7, In this figure the table along which the panelsaremoved past the coating station is shown in section. I

Fig. 9'is' a detail view of the means provided for'mounting the trough shownin Figs; '7 ands.

Referring more particularly to the drawings, 5 deslgnates'a table'providedrwith two laterally spacedlongitudinally extending guide grooves B.

v Apair of endless panel-conveying chains I are trained around sprockets 8 located at opposite ends of the table so that the upper flight of each chain travels over the upper surface of the table in one of the guide grooves 6, while the lower flight travelsrbelow the table. The sprockets 8 2 at each end of 'thetable-are carried by a common shaft 9 journalledin suitable bearings IlI. One of'said shafts is driven in a suitable manner (not shown) so that the upper flights of the chains travel in the direction indicated by the arrows X, that is to say, from the feed end A to the discharge end'B of the table.

Panel-engaging dogs I I are suitably spaced along the length of each chain and are'adjustably secured thereto in any'suitable or desired manner so that the relative spacing of these dogs may be varied to suit different widths of panels;

The panels to be rabbeted and" coated in accordance with this invention are shown at I2. Each panel is initially arranged in a position ex tending transversely across the upper surface of the table-5 immediately adjacent the feed end A, one end of the panel being butted against a guide stop I3 which extends from the feed end A a short distance along one side of the table. The panel I2 is laid in place so that the longitudinal edge facing toward the feed end A will be engaged by two aligned dogs II Which serve to hold the panel at right angles'to the longitudinal centre line of the table while pushing the panel toward the'discharge end B.

As each panel I2 tra els beyond the guide stop I3one'end: I la passes beneath a hold-down spring I E and over a motor driven circular trimming saw I1 while the other end I211 passes beneath a holddown spring I8 and over a motor driven circular trimming saw IS. The springs I6 and I8 serve to hold the panel against the upper surface of the table 5; Asthey pass over the saws I1 and I9 the ends of thepanel are trimmed or cut off to reducethe panel to a length which is predeterminedzby the relative spacing of the saws.

As hereinafter described the saws I1 and I9 are mounted so 'thatthey may be adjusted toward or away from each other to vary the extent to which the length of. the panel is reduced by the cutting'o-r trimming action of these saws.

After passing the trimming saw I9 the end IZa of the panel travels beneath a second hold-down spring 2 3 and under a motor driven circular rabb'eting saw 24. At the same time the end I2'b travels beneath a hold-down spring 25' and over a motor driven circular rabbeting saw 26. As clearly shown' in Fig, 3, the saw Z't-cuts a rabbet I20 in the upper surface of the panel while the saw .25 cuts a complementary rabbet I2d in the lower surface of the panel.

After it leaves the saw 24 the end !2a of the panel passes beneath the delivery end of a trough 28 through which asphalt is "supplied to coat the tween the trough 2s and the discharge end B and 7 serves to smooth and level off the asphalt coating previously applied to the defining walls of said rabbet. The asphalt has a tendencyto run over the leadin ends of the defining walls of the rabbet I20 and to form undesirable projecting beads of asphalt which, in the present instance, are automatically scraped ofi by a pivotally mounted scraper 4| mounted as herein after described.

During movement of the end |2a of the panel past the coating trough 28 the opposite end l2b travels beneath a hold-down spring 43 and over an asphalt pick-up wheel 44 which works in an asphalt pan 45, and serves'to apply a coating of asphalt directly to the defining walls of the rabbet I211. A scraper 46, located between the asphalt pick up wheel 44, and the discharge end B of the table extends into the rabbet |2d and serves to smooth and level off the asphalt coating applied to the defining walls of said rabbet.

Each of the trimming saws I1 and I9 is driven by a motor 48 mounted one base plate 49 havng one marginal edge thereof rolled to provide a sleeve bearing 59 arranged" to slide on a supporting shaft which extends transversely beneath the table 5. Shaft 5| is supported in bearing bracket 51a. mounted on an I-beam 52 carried by longitudinally extending "side members 53 of 1 the-table supporting frame generally indicated at. 54. The sleeve bearing 50 of each base plate 49 permits it to be moved longitudinally of shaft 5| and to be raised and lowered by vertical swinging movement relative to said shaft. Each sleeve I bearing 59 is provided with a set screw 56 for holding it in adjusted position on shaft 5|.

The opposite edge of each base plate 49 is provided with an opening 58 through which-a vertically disposed threaded stud 59'extends. lower end of stud 59 is fixed to a slid 60 which is adjustably secured to a supporting angle iron 6! by a bolt 62 working in a slot 63. Angle iron 5| extends transversely beneath table 5 and is with 'trunnions l1 journalledin bearings 18 carried by base plate 49 at opposite sides of open--.

25 is carried by a bracket 81 mounted on a transversely extending frame member 88. As herein shown each bracket 81 comprises an angle iron having its outer end fastened to frame member 88 and its inner end extending inwardly over the table, the said inner end of the bracket being upwardly ofiset with respect to the outer end and constituting thespring carrying portion of the bracket to which the associated spring is secured by rivets 89 or other suitable fastening means.

The spring 32 located in front of the delivery end of trough 28 is fastened, by a supporting arm 92, to a bracket 93 extending upwardly from a frame member 94.. The arm 92 also carries a. plate 95 to which one end of the curved scraper 4| is pivotally secured as indicated at 96. Scraper 4| is normally positioned by centering springs 91 and 98 so that its free end wipes across the leading end of the rabbeted portion |2c of the moving panel l2 and then drags along the full width of the adjacent end edge of said panel to remove the asphalt beads that would otherwise be left on these portions of the panel. The centering spring 9! is connected between thescraper 4| and the plate 95 and acts in opposition to the centering spring which isconnected between the scraper 4| and the bracket 93. l

The trough 28 is preferably mounted on the upper leaf lilflof a hinge I 9| whose lower leaf 02 is rigidly secured to a supporting arm I03 projecting laterally from member 94 of the ta-e ble supporting structure. An adjusting screw I04 is threaded downwardly through leaf I90 so that its lower end engages the upper surface of leaf I92. By turning screw |04it is possible-to raise and lower leaf I09 and to thereby vary the pressure with which the scraping edge 29 of the trough bears against the asphalt pick-up wheel 30. The scraper 33 is carried by the arm I03 which supports the trough adjusting hinge IOI.

Having thus described what we now consider to be the preferred embodiment of this invention The 11..

it will be understood that various modifications may be resorted to within the scope and spirit of the-appended claims. 1 e

Having thus described our invention, what we claim is:

, 1; A machine of the character described comprising atable, means for moving a panel over the upper surface of said table, apair of rabbeting saws arranged at opposite sides of saidtable and servingto cut reverse rabbets in opposite edge portions of the panel as the latter is moved past said saws, and means for adjustably mount ing 58. Nuts 90 and 8| are arranged on stud 59 above and below swivel plate 66. These nuts are adjusted on the stud 59 to raise or lower the base plate 49 to thereby change the elevation and cutting depth of'the trimming saw mounted on said base pate. The sleeve bearings 50 and adjustable slides '60 also permit the base plates 49 to be adjusted toward or away from the longitudinal centre line of table 5 to vary the relative spacing of the saws I! and I9.

The drivin motors 83 0f the rabbeting saws 24 and 26 are carried by base plates 84 which are'adjustably mounted in the same manner as the base plates 49.

Each of the hold-down springs |6; I8, 23 and ing each ofv said saws comprising a guide mem ber extending transversel beneath said table s. saw supporting plate provided at one edge with a bearing slidably and rotatably mounting said guide member, a slide supporting the opposite edge of said plate and slide supporting-means along which said slide is adjustable in the direction parallel to said guide member. 7

2. A machine as set forth in claim 1 in which the last mentioned edge of said plate. is secured to said slide by adjusting means operableto 7 swing said plate upwardly or downwardly about the pivotal axis afforded by said guide member.

WILLIA JOHNSQN. I JOSEPH w. .H. BRUNEAU. 

